[ofa-general] Re: [PATCH] osm: default leaf vl_stall and head_of_queue_lifecounters

Sasha Khapyorsky sashak at voltaire.com
Tue Aug 7 09:35:06 PDT 2007


Hi Amit,

On 10:24 Tue 07 Aug     , Amit Krig wrote:
> Hi Sasha
> 
> In the current switch configurations if you have a single drop (By HOQ),
> the line will be flashed for 128 Mili seconds, I think that this penalty
> for ~8mili hiccup (as the HOQ can count ~50% less then configured) is
> not a good default,

Ok. Let's start from less aggressive default values - HoQ 256msec and
VLStallCount 7 (don't need to resubmit the patch for this).

Both parameters are configurable anyway and I think it would be nice to
make deeper investigation about potentially more optimal default values.

Sasha



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